Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '00e4a0d770c3421511286471c7e7f60d928e532562bfe043eef0b90697266d73' 
  AND token = 'KvXacg65Vx2CV520w3haVIsBXf+2nYRDxE/Cmz2Mfi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}